Inside a compact disc lies a hidden world of microscopic engineering. 💿 Data is stored as tiny pits and lands arranged in a spiral. A focused laser — thinner than a strand of hair — reads those bumps by detecting how light reflects differently off each surface. Each reflection translates into binary 0s and 1s, which are then decoded back into the music or data we see and hear. It’s a perfect example of how physics and precision engineering made digital music possible. - #science #technology #cd

43 years ago, the first commercial compact disc was produced 💿 Today, over 23 million CDs can be found in the Discogs Marketplace. | Discogs

💥 Think Your Back Pain Is “Normal”? These 3 Signs Say It Might Be a Disc Herniation ❌ Most people ignore the early red flags of a herniated disc until the pain becomes unbearable. But your body usually warns you long before things get serious. Here are the 3 biggest early signs your back pain is coming from a disc injury: 1️⃣ Pain When You Bend or Twist • Flexing your spine, like bending to tie your shoes, pushes the disc backward toward the sciatic nerve. • Twisting piles on shear forces that